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// Test case for Issue #770
// https://github.com/typetools/checker-framework/issues/770
import org.checkerframework.checker.lock.qual.GuardedBy;
public class ViewpointAdaptation {
// :: error: (expression.unparsable.type.invalid)
private final @GuardedBy("a") ViewpointAdaptation f = new ViewpointAdaptation();
private @GuardedBy("this.lock") ViewpointAdaptation g = new ViewpointAdaptation();
private final Object lock = new Object();
private int counter;
public void method1(final String a) {
synchronized (a) {
// The expression "a" from the @GuardedBy annotation
// on f is not valid at the declaration site of f.
// :: error: (expression.unparsable.type.invalid)
f.counter++;
}
}
public void method2() {
ViewpointAdaptation t = new ViewpointAdaptation();
// :: error: (assignment.type.incompatible)
t.g = g; // "t.lock" != "this.lock"
synchronized (t.lock) {
// :: error: (lock.not.held)
g.counter++;
}
}
public void method3() {
final ViewpointAdaptation t = new ViewpointAdaptation();
// The type of 'g' is refined from @GuardedByUnknown (the default for
// a local variable due to CLIMB-to-top semantics) to @GuardedBy("t.g")
final ViewpointAdaptation g = t.g;
Object l = t.lock;
synchronized (l) {
// Aliasing of lock expressions is not tracked by the Lock Checker.
// The Lock Checker does not know that l == t.lock
// :: error: (lock.not.held)
g.counter++;
}
}
}
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